Infrared touch display device and method of fabricating same

Abstract

The present application provides an infrared touch display device and a fabrication method thereof. In the present application, a cover plate coated with a sealant and a display panel are sent into a vacuum chamber and vacuumed; when the cover plate is attached to the display panel, the cover plate corresponds to The portion of the central portion enclosed by the frame rubber is recessed toward the display panel side and closely fits with the display panel, and the periphery of the display panel and the periphery of the cover plate are sealed by the sealant; Group infrared emitting tubes and infrared receiving tube.

What is claimed is: 
     
       1. A method of fabricating an infrared touch display device, wherein the method comprises the following steps:
 step S 10 , applying a sealant on a periphery of a display panel or a cover plate; 
 step S 20 , delivering the cover plate and the display panel into a vacuum chamber, and vacuuming the vacuum chamber by using a vacuum pump in a sealed environment; 
 step S 30 , aligning and bonding the cover plate with the display panel, wherein in a vacuum environment, a portion of the cover plate corresponding to a central portion surrounded by the sealant is recessed toward the display panel and closely attached to and in direct contact with the display panel, and the periphery of the display panel and the periphery of the cover plate are sealed by the sealant; and 
 step S 40 , providing an infrared touch component around the cover plate, wherein the infrared touch component comprises a plurality of sets of infrared emitting tubes and infrared receiving tubes disposed in a one-by-one correspondence to each other. 
 
     
     
       2. The fabrication method according to  claim 1 , wherein the step S 30  comprises the following steps:
 vacuuming a cavity enclosed by the cover plate and the display panel through a gap between the sealant and the cover plate/the display panel by the vacuum pump when the cover plate and the display panel are about to be bonded, such that the cover plate receives a pressure toward the display panel, and the portion of the cover plate corresponding to the central portion is recessed toward the display panel and closely attached to and in direct contact with the display panel. 
 
     
     
       3. The fabrication method according to  claim 2 , wherein the display panel and the cover plate are heated by a heating device in the vacuum chamber in a vacuum environment, so that the sealant is melted and deformed under a pressure of vacuuming the vacuum chamber, so that the melted sealant fully fills a gap between the cover plate and the display panel at a side of the sealant near the cavity. 
     
     
       4. The fabrication method according to  claim 3 , wherein the cover plate and the display panel are irradiated with an ultraviolet ray so that the melted sealant is cured. 
     
     
       5. The fabrication method according to  claim 1 , wherein in the step S 40 , the infrared emitting tubes and the infrared receiving tubes disposed in a one-by-one correspondence to each other are respectively disposed on opposite sides of the cover plate and disposed in a non-recessed area of the cover plate, the infrared emitting tubes are configured to emit infrared rays, the infrared receiving tubes are configured to receive the infrared rays emitted by the infrared emitting tubes, and the plurality of sets of the infrared emitting tubes and the infrared receiving tubes are formed into a horizontally-vertically intersecting infrared matrix, and a coordinate position of a touch point on the cover plate is calculated by data of a portion of the infrared rays shaded by an operator's finger which touches the cover plate measured based on a combination of the infrared emitting tubes and the infrared receiving tubes. 
     
     
       6. An infrared touch display device, comprising:
 a display panel; 
 a cover plate disposed on the display panel; and 
 an infrared touch component disposed on the cover plate, 
 wherein the infrared touch component comprises a plurality of sets of infrared emitting tubes and infrared receiving tubes disposed in a one-by-one correspondence to each other, 
 a periphery of the display panel and a periphery of the cover plate are attached by a sealant, and 
 a portion of the cover plate corresponding to a central portion surrounded by the sealant is closely attached to and in direct contact with the display panel. 
 
     
     
       7. The infrared touch display device according to  claim 6 , wherein the portion of the cover plate corresponding to the central portion surrounded by the sealant is recessed toward the display panel and closely attached to and in direct contact with the display panel. 
     
     
       8. The infrared touch display device according to  claim 7 , wherein the infrared emitting tubes and the infrared receiving tubes are respectively disposed on opposite sides of the cover plate and disposed in a non-recessed area of the cover plate, the infrared emitting tubes are configured to emit infrared rays, the infrared receiving tubes are configured to receive the infrared rays emitted by the infrared emitting tube, and the plurality of sets of the infrared emitting tubes and the infrared receiving tubes are formed into a horizontally-vertically intersecting infrared matrix, and a coordinate position of a touch point on the cover plate is calculated by data of a portion of the infrared rays shaded by an operator's finger which touches the cover plate measured based on a combination of the infrared emitting tubes and the infrared receiving tubes. 
     
     
       9. The infrared touch display device according to  claim 6 , wherein a surface of the cover plate adjacent to the infrared touch component is a horizontal plane, and a thickness of a central region of the cover plate is greater than a thickness of a periphery region of the cover plate. 
     
     
       10. An infrared touch display device, comprising:
 a display panel; 
 a cover plate disposed on the display panel; 
 an infrared touch component disposed on the cover plate, 
 wherein the infrared touch component comprises a plurality of sets of infrared emitting tubes and infrared receiving tubes disposed in a one-by-one correspondence to each other, 
 a periphery of the display panel and a periphery of the cover plate are attached by a sealant, 
 a portion of the cover plate corresponding to a central portion surrounded by the sealant is closely attached to and in direct contact with the display panel, and the sealant fully fills a gap between the cover plate and the display panel to fix the cover plate on the display panel. 
 
     
     
       11. The infrared touch display device according to  claim 10 , wherein the portion of the cover plate corresponding to the central portion surrounded by the sealant is recessed toward the display panel and closely attached to and in direct contact with the display panel. 
     
     
       12. The infrared touch display device according to  claim 11 , wherein the infrared emitting tubes and the infrared receiving tubes are respectively disposed on opposite sides of the cover plate and disposed in a non-recessed area of the cover plate, the infrared emitting tubes are configured to emit infrared rays, the infrared receiving tubes are configured to receive the infrared rays emitted by the infrared emitting tube, and the plurality of sets of the infrared emitting tubes and the infrared receiving tubes are formed into a horizontally-vertically intersecting infrared matrix, and a coordinate position of a touch point on the cover plate is calculated by data of a portion of the infrared rays shaded by an operator's finger which touches the cover plate measured based on a combination of the infrared emitting tubes and the infrared receiving tubes. 
     
     
       13. The infrared touch display device according to  claim 10 , wherein a surface of the cover plate adjacent to the infrared touch component is a horizontal plane, and a thickness of a central region of the cover plate is greater than a thickness of a periphery region of the cover plate.